(Mfg. 1/08), Serial# 6-31514-1B, DOT406AL, 5335 Gallon, 2-Compartment (2100,3235), Double Bulkhead, Air Operated Internals, 4" API 'Y' Bottom Load Heads w/ Brake Interlock & Sight Glasses, Work Light @ Load Heads, Offsite Gravity Drops, Air Ride Suspension, 22.5 Tires on All Aluminum Wheels, Cam Style Brakes, (2) R/H Stacked Hose Tubes w/ Fitting Box @ End, Aluminum Compartment Box in Draw Bar, Aluminum Ladder @ Front of Trailer......